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DensGlass Sheathing

Glass-mat sheathing • Johns Creek, GA

DensGlass Sheathing Replacement in Johns Creek

When a leak has been running behind stucco or EIFS on a Johns Creek building, the sheathing is usually the real damage. We open the wall over the wet area, replace the board with glass-mat gypsum sheathing, and rebuild the barrier, flashing and finish.

Wet sheathing removed
Glass-mat board installed
New barrier & flashing
Finish matched to facade

Call (770) 758-5861 How the repair works

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Johns Creek commercial stucco & EIFS. Property managers, boards, owners & builders.

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Behind the facade

Behind the facade is where the repair is

On a lot of Johns Creek office, retail and multifamily buildings, the board behind the stucco or EIFS is OSB, plywood or paper-faced gypsum. Those materials hold up while they stay dry. Once water gets past a window perimeter, a parapet cap or a failed joint, the board absorbs it and the cladding in front slows drying. Wood swells and loses strength, paper facings break down, and fasteners pull loose. The facade may look fine for years while that happens.

No sealant or coating reaches that damage. We map moisture to find the extent, remove the stucco or EIFS over the affected area, and cut the sheathing back to dry, sound board. Framing is checked and repaired where needed, including any termite-related damage we uncover. New glass-mat gypsum sheathing, often called DensGlass, goes in its place because it resists moisture far better than the board it replaces.

The most important step comes next: lapping a new weather barrier into the existing one, correcting the flashing that failed, and rebuilding the cladding so the repaired area matches the wall around it.

Exterior wall opened with new glass-mat sheathing installed behind the cladding

1999rebuilding Georgia walls

What we rebuild

Sheathing & substrate repairs in Johns Creek

The facade only tells you there is a problem. These are the layers we rebuild once a wall is open.

Water-damaged sheathing

Swollen OSB, delaminated plywood and softened gypsum board cut back to sound material and replaced with glass-mat board.

Moisture readings guide the cut

Weather-resistive barrier

New barrier lapped over the sheathing and tied into the existing barrier at every edge of the repair.

Every lap sheds water down

Window & storefront openings

Sill pans and jamb flashing integrated with the barrier so water that reaches an opening drains out.

Where most damage starts

Parapets & roof-to-wall joints

Flashing corrected where a roof, balcony or breezeway meets the wall, a common source of wet sheathing.

Coordinated with the roofer

Termite-damaged substrate

Sheathing and trim damaged by termites replaced, and cladding that runs below grade corrected.

Treatment stays with pest control

Framing documented

Corroded steel studs or decayed wood framing are photographed and referred to the owner’s engineer before the wall is closed.

Engineer decides structure

Choosing the board

Why glass-mat board goes back in

Putting new OSB or paper-faced gypsum back behind the cladding puts the same vulnerable material in the same spot on a wall that has already shown it can get wet. Glass-mat gypsum sheathing has fiberglass facings in place of paper and a moisture-resistant core, so a wet spell does not break it down or feed mold the way wood and paper can.

It is not waterproof on its own. The weather barrier, flashing and sealant joints are still what keep water out, and every replacement we do includes them. Where the sheathing is part of a building’s structural design, or where we find damaged studs, tracks or framing, the owner’s engineer specifies that repair and we rebuild the wall to it. You see photos of the open wall before anything is closed.

Sheathing behind stucco & EIFS
Board	When it stays wet	Our approach
OSBCommon on older wood frame	Swells and loses strength	Cut out and replaced
Plywood	Delaminates over time	Replaced or per engineer
Paper-faced gypsum	Facing and core break down	Replaced with glass-mat
Glass-mat gypsumDensGlass-type board	Resists rot and mold	Installed at the repair
Barrier & flashingOver any board	Sheds water to the weeps	Rebuilt every time

Our process

How a sheathing replacement runs on site

The wall is open for as short a time as possible and protected at the end of every day, with the work phased around tenants and residents.

Survey & map

We take moisture readings across the elevation to find the edges of the wet area and the leak source before any cladding comes off.

Readings mapped on photos
Leak source identified
Itemized written scope

Open & replace

Cladding is removed over the damaged area, wet sheathing is cut back to sound material, and glass-mat board is installed.

Daily weather protection
Framing issues documented
Changes approved first

Barrier, flash & finish

New barrier and flashing are lapped into the existing wall, then the stucco or EIFS is rebuilt and color matched.

Barrier lapped correctly
Flashing at every opening
Color & texture matched

Soft or bulging areas on your facade?

The longer sheathing stays wet, the more of the wall it takes with it. A moisture survey shows how far it has gone.

Request a site walk

Wet walls in Johns Creek

Long, humid seasons keep walls wet

Georgia's humidity is part of why sheathing damage spreads in Johns Creek buildings before anyone sees it.

A wall that takes on water from a leak needs dry weather to recover, and a North Fulton summer rarely provides it. Long humid stretches, regular afternoon storms and shaded elevations next to mature trees and landscaping slow drying behind the cladding. On balconies and breezeways of apartment and condo buildings, and below the windows of older office buildings, that is where we most often find soft sheathing.

Below windows

Sheathing under sills and storefront heads where perimeter sealant failed.

Balconies & breezeways

Board at balcony ledgers and breezeway walls on multifamily buildings.

Framing & termites

Studs and plates checked and repaired once the wall is open.

Johns Creek
Medlock Bridge Road
State Bridge Road
Technology Park
Old Alabama Road
Jones Bridge Road
Ocee
Alpharetta
Duluth
Roswell
Suwanee

Questions & answers

Sheathing replacement questions in Johns Creek

What Johns Creek owners and boards ask once moisture readings come back high.

Does sheathing replacement in Johns Creek require a permit?

Opening a wall and replacing sheathing or framing can require a permit depending on the extent. Check with the City of Johns Creek building department for your scope. Our written scope describes the areas and materials involved.

Can you replace sheathing on an occupied Johns Creek apartment or condo building?

Yes. We open one area at a time, close it in with new board and barrier the same day where possible, and coordinate with management about resident notice, balcony access and noise.

How do you know how much sheathing to replace?

Moisture readings before opening give us the likely extent. Once the wall is open, we cut back until the board is dry and sound. The quote explains how areas beyond the expected extent are handled.

Why use glass-mat gypsum instead of plywood or OSB?

Glass-mat gypsum board resists moisture and mold much better than wood-based panels or paper-faced gypsum, so it holds up better if water ever gets behind the cladding again.

Will the repaired area match the rest of the facade?

We rebuild the stucco or EIFS and match color and texture. On a weathered elevation, recoating to the nearest corner or joint may be needed for a seamless look, and we will tell you before work starts.

Find and fix wet sheathing in Johns Creek

Tell us where the leaks or soft spots are. We will map moisture and send a written replacement scope.

Call (770) 758-5861 Commercial quote